513804668 has 24 divisors (see below), whose sum is σ = 1025286192. Its totient is φ = 223190784.

The previous prime is 513804653. The next prime is 513804677. The reversal of 513804668 is 866408315.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289730 + ... + 291497.

It is an arithmetic number, because the mean of its divisors is an integer number (42720258).

Almost surely, 2^513804668 is an apocalyptic number.

It is an amenable number.

513804668 is a deficient number, since it is larger than the sum of its proper divisors (511481524).

513804668 is a wasteful number, since it uses less digits than its factorization.

513804668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581261 (or 581259 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 513804668 is about 22667.2598255722. The cubic root of 513804668 is about 800.9388290690.

The spelling of 513804668 in words is "five hundred thirteen million, eight hundred four thousand, six hundred sixty-eight".